Have said individual email the LISTSERV@listhost the command THANKS If she gets an appropriate response, then it is either a list problem (maybe she is being filtered?), a LISTSERV Distribute backbone-related problem (a LISTSERV host might be in somebody's anti-relay rules), an MX hosting problem, a DNS problem, or something related to anti-spam. These are all speculations of course since you provided zero information other than naming a country. /Pete